Disguise seem to be in both Con and Stealth (maybe Con Disguise is used when impersonating and pretending to be someone else while Stealth Disguise might be used more for blending in or hiding -- Or maybe its OK to have the same specialization in two different skills if you can make a good argument for it).
Electronics seem to be used together with a key-card copier. Could see Electronics being used for creating a fake credstick while Con would be used for creating a fake ID badge. And while Hardware is a specialization of Electronics, Engineering is used for repairing Matrix Damage (which mean a decker probably also need Engineering or depend on an Engineer/Rigger/Contact to fix his deck).
Artisan doesn't really fit anywhere.... But I guess Con could fit (painting and creating fake paintings, sculpture and creating fake sculptures, jewelry and creating fake jewelry).
Biotech seem to be used to preserve DNA (which mean Chemistry is included in Biotech which make sense, was looking for that too - it was not mentioned as far as I could see).
There is a series called White Collar (its on Netflix). Plot is a con artist going white hat and hook up with an FBI agent to solve crime. Series is not really that great, but anyway... the con artist is really good at face-things (seducing, smooth talking, fast talking, lying, negotiation, persuasion) as well as forgery-things (both spotting and making forged paintings, statues, jewelry etc).
I guess he is basically the new SR6 Con skill, personalized :-)